cyli · November 7, 2021 13:10 · Jan 26, 2013 · Jan 26, 2013
diff --git a/insert_notes.py b/insert_notes.py
@@ -1,3 +1,12 @@
+"""
+Export your keynote file to HTML.  Pass the keynote file (to extract the
+presentation notes) and the extracted HTML directory to this script, and it
+will attempt to inject the presenter notes it extracted from the Keynote file
+into the HTML.
+
+Only tested on Keynote '09, Chrome 24.0.1312.56
+"""
+
 import os
 import random
 import string

diff --git a/insert_notes.py b/insert_notes.py
@@ -0,0 +1,117 @@
+import os
+import random
+import string
+import subprocess
+import sys
+
+from lxml import etree, html
+
+
+def extract_notes(keynote_file):
+    # keynote file is a giant compressed xml file - uncompress it
+    tempdir = '/tmp/keynote_thing.{0}.xml'.format(
+        "".join(random.sample(string.ascii_letters, 10)))
+    os.mkdir(tempdir)
+    subprocess.check_call(['unzip', keynote_file, '-d', tempdir])
+    xml = etree.parse(tempdir + '/index.apxl')
+    root = xml.getroot()
+
+    # get all the presenter note xml elements
+    notes = root.xpath('.//key:notes//sf:text-body', namespaces=root.nsmap)
+
+    # replace all the funky keynote tags with html tags - I am stupid and don't
+    # know xslt, so do this the slow way
+    sf_namespace = '{{{0}}}'.format(root.nsmap['sf'])
+
+    def replace_node(node):
+        if node.tag.startswith(sf_namespace):
+            node.tag = node.tag.replace(sf_namespace, '')
+            if node.tag == 'link':
+                node.tag = 'a'
+            else:
+                if node.tag == 'text-body':
+                    node.tag = 'div'
+                node.attrib.clear()
+            node.nsmap.clear()
+
+        for child in node.getchildren():
+            replace_node(child)
+
+    for idx, note in enumerate(notes):
+        replace_node(note)
+        note.attrib['id'] = 'slidePresenterNotes{0}'.format(idx)
+        note.attrib['class'] = 'presenterNotes'
+
+    return notes
+
+
+def inject_js(html_file, presenter_notes):
+    doc = html.parse(html_file)
+    head = doc.xpath("//head")[0]
+    body = doc.xpath("//body")[0]
+
+    style = etree.Element("style")
+    style.text = """
+        #presenterNotes {
+            margin: auto 0; width: 15%; background-color: #CCCCCC;
+            padding: 0 5px; color: black; border: 1px solid black;"
+        }
+        #presenterNotesSlideNumber {
+            font-weight: bold;
+        }
+    """
+
+    notes = etree.Element("div", **{"id": "presenterNotes"})
+    notes.append(etree.Element("div", **{"id": "presenterNotesSlideNumber"}))
+    notes.extend(presenter_notes)
+
+    handler = etree.Element("script")
+    handler.text = """
+    function injectPresenterNotes () {
+
+        injection_self = this;
+        injection_self.presenterNotes = document.getElementById(
+            "presenterNotes");
+
+        injection_self.lastSlideNumber = -1;
+        function updatePresenterNotes () {
+            if (currentEventTimeline != injection_self.lastSlideNumber) {
+                // hide other slide notes
+                injection_self.presenterNotes.select(
+                    '[class="presenterNotes"]').invoke('hide');
+                // display the notes for the slide that is visible
+                $('slidePresenterNotes' + currentEventTimeline).show();
+                // update the slide number label
+                $('presenterNotesSlideNumber').update(
+                    "Presenter notes for Slide " + (currentEventTimeline + 1));
+                injection_self.lastSlideNumber = currentEventTimeline;
+            }
+        };
+
+        updatePresenterNotes();
+        // update every 100 ms because it could take this number a little while
+        // to change
+        setInterval(updatePresenterNotes, 100);
+    }
+    """
+
+    head.append(style)
+    head.append(handler)
+    body.insert(0, notes)
+    body.attrib['onload'] = "; ".join(
+        [x for x in (body.attrib.get('onload', '').rstrip(';'),
+                     "injectPresenterNotes();") if x])
+
+    doc.write(html_file, method="html")
+
+
+def modify_all_html(html_dir, presenter_notes):
+    find_output = subprocess.check_output(
+        ['find', html_dir, '-name', '*.html'])
+    all_html = [name for name in find_output.split('\n') if name]
+    for html_file in all_html:
+        inject_js(html_file, presenter_notes)
+
+
+presenter_notes = extract_notes(sys.argv[1])
+modify_all_html(sys.argv[2], presenter_notes)